Environment

• Operating System: Linux
• Node Version: v18.18.0
• Nuxt Version: 3.9.3
• CLI Version: 3.10.0
• Nitro Version: 2.8.1
• Package Manager: npm@10.2.3
• Builder: -
• User Config: devtools
• Runtime Modules: -
• Build Modules: -

Reproduction

https://stackblitz.com/edit/github-ddvycp

Describe the bug

const wrapper = await mountSuspended(OptionAPIComponent)

wrapper.vm.$data is empty
wrapper.setData({...data}) will result into error:

TypeError: Cannot add property, object is not extensible

Furthermore, I cannot call any method of the component instance:

TypeError: wrapper.vm.myMethod is not a function

Additional context

Component written in composition api doesn't have this issue.
@vue/test-utils doesn't have this issue.

Logs

No response